Simulated permafrost dynamics in the Northwest Czech Republic during the Last Glacial cycle

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F25%3A00637999" target="_blank" >RIV/67985530:_____/25:00637999 - isvavai.cz</a>

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/epdf/10.1002/ppp.70000" target="_blank" >https://onlinelibrary.wiley.com/doi/epdf/10.1002/ppp.70000</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/ppp.70000" target="_blank" >10.1002/ppp.70000</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Simulated permafrost dynamics in the Northwest Czech Republic during the Last Glacial cycle

Popis výsledku v původním jazyce

We simulated permafrost dynamics during the Last Glacial cycle for the Litoměřice borehole in the northwest Czech Republic based on three distal palaeo-temperature proxy records that were optimized to minimize the deviation between the simulatednand measured temperature–depth profiles. The most plausible simulations showed that there were two major permafrost phases in marine isotope stage (MIS) 4 and 2 when the maximum permafrost thickness was ~ 80 and ~ 110 m, respectively. Several permafrost growth and degradation phases took place during MIS 3, but the maximum permafrost thickness reached only ~ 40 m. Only short-term occurrences of less than ~ 20-m thick permafrost occurred during MIS 5d–a, and no permafrost existed duringnMIS 1. Unlike previous simulations that largely had unknown validity, the permafrost dynamics simulated here is consistent with the measured temperature–depth profiles as well as with the growth and degradation of diverse permafrost features. Hence, we provide a plausible reconstruction of past permafrost occurrence and thickness for the whole Last Glacial cycle, which is superior to the existing permafrost records and archives that are mostly clustered in and around MIS 2.

Název v anglickém jazyce

Simulated permafrost dynamics in the Northwest Czech Republic during the Last Glacial cycle

Popis výsledku anglicky

We simulated permafrost dynamics during the Last Glacial cycle for the Litoměřice borehole in the northwest Czech Republic based on three distal palaeo-temperature proxy records that were optimized to minimize the deviation between the simulatednand measured temperature–depth profiles. The most plausible simulations showed that there were two major permafrost phases in marine isotope stage (MIS) 4 and 2 when the maximum permafrost thickness was ~ 80 and ~ 110 m, respectively. Several permafrost growth and degradation phases took place during MIS 3, but the maximum permafrost thickness reached only ~ 40 m. Only short-term occurrences of less than ~ 20-m thick permafrost occurred during MIS 5d–a, and no permafrost existed duringnMIS 1. Unlike previous simulations that largely had unknown validity, the permafrost dynamics simulated here is consistent with the measured temperature–depth profiles as well as with the growth and degradation of diverse permafrost features. Hence, we provide a plausible reconstruction of past permafrost occurrence and thickness for the whole Last Glacial cycle, which is superior to the existing permafrost records and archives that are mostly clustered in and around MIS 2.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10508 - Physical geography

Projekt

<a href="/cs/project/GA21-23196S" target="_blank" >GA21-23196S: Rozšíření, mocnost a vývoj permafrostu ve střední Evropě v pozdním kvartéru</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Permafrost and Periglacial Processes

ISSN

1045-6740

e-ISSN

1099-1530

Svazek periodika

36

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

739-751

Kód UT WoS článku

001545501500001

EID výsledku v databázi Scopus

2-s2.0-105012415212